Device for cutting off and threading pipes.



Patented Nov. 5, 1930!.

A". HECTOR.

DEVICE FOR CUTTING OFF AND THBEADING PIPES.

(Application filed Jung 8, 1901.)

(No Model.)

2 Sheats-Shaet I.

IN VENTOR a [VIII/Illa ATTORNEY r5: uqnms Prnzns cow. PHOTO-H7141,WAMINGTON. nv c.

No. 685,869. Patented Nov. 5, mm. A. RECTDR.

DEVICE FOR CUTTING'UFF AND THREADING PIPES.

(Application filed June 8, 1901.)

(No Model.)

ATTORNEY M VEALZQ pipe.

NITED STATES PATENT UFFICE.

.ALOORN nncron, or HOT SPRINGS, ARKANSAS.

SPECIFICATION forming art of Letters Patent No. 685, dated November190l- Application filed June 8, 1901. Serial No. 68,711. (No model.)

To ctZZ whom it may concern.-

Be it knownthat I, ALCORN REOTOR, a citizen of the United States,residing 'at Hot Springs, in the county of Garland and State ofArkansas, have invented certain new and useful Improvements in Devicesfor Cutting Off and Threading Pipes, of which the following is aspecification.

My invention is a device for threading and cutting off pipes. I canthread and cut off any pipe varying in size from one-fourth to fiveinches in diameter that a lathe can.

My device is a hand-lathe that revolves the tool around the pipe insteadof the pipe revolving in the lathe.

My invention may be called stocks and dies. It threads either way, tothe right or to the left.

Figure 1 is a vertical sectional view of my invention, except thehandle. Fig. 2 a front end view of my invention. Fig. 3 is a rearendview of my invention. Fig. 4 is a sec tional view of the rear part ofthe device. Fig. 5 is a longitudinal and cross-sectional view of asleeve used in connection with my invention.

My invention is described as follows:

A is a pipe in position.

B is a threaded sleeve having a shoulder I and is adapted to be rigidlysecured to the pipe A by means of screws G. (See Figs. 1 and 3.)

C is a threaded nut in which the threaded portion of B works. This nutOis rigidly secured to the head D by means of screws E, so that when thehead is turned by means of crank-handle H the nut C revolves on the Thisoperation of turning the crank turns the stock or nut and head to theright until the left-hand end of said nut abuts shoulder I.

K is a sleeve or axle for nut Gand head D, the screws M simplypreventing sleeve K from coming, out of nut C as the points of saidscrews run in the groove M in and around the sleeve. The sleeve K may berigidly secured to pipe A by screws L, (see Figs. 1 and 2,) sothat whenthe head D is turned it revolves around sleeve K, allowing D to onlyhave arotary motion. This is done only when you cut oif apipe. The'pipenever turns.

operates.

D is the head, provided with an upper threaded projection d, in whichoperates a drivingthumbscrewJ. Justimmediately under the projection d isanother projection (1', having through it a vertical perforation 61immediately under and concentric with the threaded opening in which thethu1nb-screw J In this vertical opening (Z works the cutting'tool F andis secured in place by a screw (1 This cutting-tool F may be taken outand any other appropriate tool supplied in its place, as in practicaloperation I cut;

is a sectional view of the device with dies in readiness for operationon the pipe. I first place the pipe A ina vise. Then Islip sleeve B onthe pipe.- Then I putK and Gin D and fasten securely by screws E. Then Islip the whole, 0, K, and D, on pipe A. The threads on sleeve B and inthe nut O are the same as T the threads which I wish to cut on the pipe.

I then screw the sleeve B into nut C until the threads are securelycaught. Then I slip the whole until the cutting-tool F comes against theend of the pipe. Then I fasten the sleeve B securely to the pipe bymeans of screws G. Now I am ready to thread the pipe. To do so, I simplyturn the crankhandle H to the right until I have cut'on the pipe thenumber of threads I desire. If the threads thus out are not sufficientlydeep, turn the handle tothe left. This operation simply unscrews ituntil finally the tool F comes again to the starting-point. Then set thecutting-tool deeper by means of a thumbscrew J. Repeat this operationuntil your threads are deep enough. To cut the end of a pipe off, I doaway with the sleeve B, forin this I wish a circular movement only.Fasten K to pipe A by means of screws L. K is a sleeve or axle for nut Gand head D, the screws M simply preventing sleeve K from coming out ofnut C. To cut the end of a pipe otf, I slip it (the head D) along thepipe until the cutter F comes just over where I wish to sever the pipe.I then fasten sleeve K securely by screws L. Ithen take hold of thecrank-handle H and rotate the device and feed the cutting-tool graduallydown onto the pipe by means of thumb-screw J until the pipe is severed.

Pipes one-fourth, one-half, and one inch in diameter have the same sizethreads used on then]. The sleeve B is made tofit the oneinch pipe. If Iwish to cut the one-half-inch pipe or the one-fourth-inch pipe, thesleeve B is too large for the pipes. I remedy this by an extra internalsleeve N of proper size that fills the space between the pipe and theinner surface of the sleeve ;B. I have sleeves of various sizes for thepurpose just above described, that do away with the necessity of havinga different-sized sleeve B and nut O for every size of pipe. The use ofthese extra sleeves makes thedevice cheaper than it would be if I had touse an extra sleeve B and nut O for every different size pipe.

When the threads on the pipes change in size, then I have to have anextra sleeve B and nut O, as the threads on parts B and 0 must be thesame as the threads I wish to out on the pipe. The threads on the partsB and O are made square, as this shape of thread lasts longer than thethreads that come to a sharp edge.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. A head D,provided with a forward threaded extension d; a thumb-screwJ, working in the threaded portion of said extension a lower extensiond, immediately under the extension just mentioned, provided with avertical opening 01 and adapted to carry a cuttingtool F; saidcutting-tool adapted to be held in place by a thumb-screw d said head.provided with a crank-handle H; internallythreaded nut O, secured tosaid head by means of screws E; asleeve K,working'around the pipe A, andinside of forward end of nut C; said sleeve provided with a circulargroove M; screws M, passing through nut C, and into groove M; a threadedsleeve B, having a circular shoulder I, and adapted to work in nut O,and adapted to be held securely to a pipe A, by screws G, (see Figs. 1and 3,) substantially as shown and described and for the purposes setforth.

2. A device for threading and severing pipes, consisting of ahead,having a handle; a tool-holding projection extending forward from thefront face of said head; a cuttingtool working in said projection;ascrew work- .ing through said projection, and adapted to hold said toolin place; a threaded projection situated above said last-mentionedprojection; a screw through said last-mentioned projection, and adaptedto force said cutting-tool downwardly; a nut internally threaded nearits rear end, secured to said head; a sleeve 1 working inside of saidnut at its front end,

ALOORN HECTOR.

Witnesses:

J. H. CUNNINGHAM, W. M. DRAUGHAN.

